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经营范围
发明名称
Housing vent
摘要
申请公布号
US2880744(A)
申请公布日期
1959.04.07
申请号
US19570653848
申请日期
1957.04.19
申请人
GENERAL MOTORS CORPORATION
发明人
JR. FRANK R. L. DALEY,
分类号
F15B21/04;F16H57/02;F16K24/04;F16N21/06
主分类号
F15B21/04
代理机构
代理人
主权项
地址
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